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+/* 
+ * histogram.h
+ *
+ * Copyright (c) 2009 by Tor M. Aamodt, Wilson W. L. Fung and the 
+ * University of British Columbia
+ * Vancouver, BC  V6T 1Z4
+ * All Rights Reserved.
+ * 
+ * THIS IS A LEGAL DOCUMENT BY DOWNLOADING GPGPU-SIM, YOU ARE AGREEING TO THESE
+ * TERMS AND CONDITIONS.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * NOTE: The files libcuda/cuda_runtime_api.c and src/cuda-sim/cuda-math.h
+ * are derived from the CUDA Toolset available from http://www.nvidia.com/cuda
+ * (property of NVIDIA).  The files benchmarks/BlackScholes/ and 
+ * benchmarks/template/ are derived from the CUDA SDK available from 
+ * http://www.nvidia.com/cuda (also property of NVIDIA).  The files from 
+ * src/intersim/ are derived from Booksim (a simulator provided with the 
+ * textbook "Principles and Practices of Interconnection Networks" available 
+ * from http://cva.stanford.edu/books/ppin/). As such, those files are bound by 
+ * the corresponding legal terms and conditions set forth separately (original 
+ * copyright notices are left in files from these sources and where we have 
+ * modified a file our copyright notice appears before the original copyright 
+ * notice).  
+ * 
+ * Using this version of GPGPU-Sim requires a complete installation of CUDA 
+ * which is distributed seperately by NVIDIA under separate terms and 
+ * conditions.  To use this version of GPGPU-Sim with OpenCL requires a
+ * recent version of NVIDIA's drivers which support OpenCL.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 
+ * 3. Neither the name of the University of British Columbia nor the names of
+ * its contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * 4. This version of GPGPU-SIM is distributed freely for non-commercial use only.  
+ *  
+ * 5. No nonprofit user may place any restrictions on the use of this software,
+ * including as modified by the user, by any other authorized user.
+ * 
+ * 6. GPGPU-SIM was developed primarily by Tor M. Aamodt, Wilson W. L. Fung, 
+ * Ali Bakhoda, George L. Yuan, at the University of British Columbia, 
+ * Vancouver, BC V6T 1Z4
+ */
+
+#ifndef HISTOGRAM_H
+#define HISTOGRAM_H
+
+#ifdef __cplusplus
+
+#include <string>
+
+class binned_histogram {
+protected:
+
+   std::string m_name;
+   int m_nbins;
+   int *m_bins;        // bin boundaries
+   int *m_bin_cnts;    // counters
+   int m_maximum;      // the maximum sample
+
+public:
+
+   binned_histogram (std::string name = "", int nbins = 32, int* bins = NULL);
+
+   binned_histogram (const binned_histogram& other);
+
+   void reset_bins ();
+
+   void add2bin (int sample);
+
+   void fprint (FILE *fout);
+
+   virtual ~binned_histogram ();
+
+};
+
+class pow2_histogram : public binned_histogram {
+
+public:
+
+   pow2_histogram ( std::string name = "", int nbins = 32, int* bins = NULL);
+
+   ~pow2_histogram() {}
+
+   void add2bin (int sample);
+
+};
+
+class linear_histogram : public binned_histogram {
+
+private:
+
+   int m_stride;
+
+public:
+
+   linear_histogram (int stride = 1, const char *name = NULL, int nbins = 32, int* bins = NULL);
+
+   ~linear_histogram() {}
+
+   void add2bin (int sample);
+
+};
+
+#endif
+
+#endif /* HISTOGRAM_H */